首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   19689篇
  免费   1598篇
  国内免费   582篇
耳鼻咽喉   172篇
儿科学   328篇
妇产科学   562篇
基础医学   2562篇
口腔科学   420篇
临床医学   2164篇
内科学   4112篇
皮肤病学   246篇
神经病学   1191篇
特种医学   541篇
外国民族医学   3篇
外科学   2651篇
综合类   1494篇
现状与发展   3篇
一般理论   5篇
预防医学   1077篇
眼科学   758篇
药学   1600篇
  6篇
中国医学   570篇
肿瘤学   1404篇
  2024年   27篇
  2023年   209篇
  2022年   446篇
  2021年   689篇
  2020年   450篇
  2019年   488篇
  2018年   576篇
  2017年   507篇
  2016年   499篇
  2015年   670篇
  2014年   819篇
  2013年   942篇
  2012年   1390篇
  2011年   1500篇
  2010年   914篇
  2009年   743篇
  2008年   1092篇
  2007年   1110篇
  2006年   1147篇
  2005年   1121篇
  2004年   919篇
  2003年   787篇
  2002年   775篇
  2001年   542篇
  2000年   532篇
  1999年   488篇
  1998年   219篇
  1997年   214篇
  1996年   175篇
  1995年   124篇
  1994年   122篇
  1993年   85篇
  1992年   207篇
  1991年   191篇
  1990年   168篇
  1989年   156篇
  1988年   123篇
  1987年   116篇
  1986年   91篇
  1985年   67篇
  1984年   45篇
  1983年   32篇
  1982年   51篇
  1981年   41篇
  1980年   44篇
  1979年   37篇
  1978年   37篇
  1977年   22篇
  1975年   21篇
  1973年   14篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
Rhabdomyolysis is a syndrome of skeletal muscle injury with release of cellular constituents such as potassium,phosphate,urate and intracellular proteins such as myoglobin into the circulation,which may cause complications including acute kidney injury,electrolyte disturbance and cardiac instability.Abnormal liver function tests are frequently observed in cases of severe rhabdomyolysis.Typically,there is an increase in serum aminotransferases,namely aspartate aminotransferase and alanine aminotransferase.This raises the question of liver injury and often triggers a pathway of investigation which may lead to a liver biopsy.However,muscle can also be a source of the increased aminotransferase activity.This review discusses the dilemma of finding abnormal liver function tests in the setting of muscle injury and the potential implications of such an association.It delves into some of the clinical and experimental evidence for correlating muscle injury to raised aminotransferases,and discusses pathophysiological mechanisms such as oxidative stress which may cause actual liver injury.Serum aminotransferases lack tissue specificity to allow clinicians to distinguish primary liver injury from muscle injury.This review also explores potential approaches to improve the accuracy of our diagnostic tools,so that excessive or unnecessary liver investigations can be avoided.  相似文献   
3.

Background

Arterial vascular anomalies in patients undergoing kidney transplantation (KT) are correlated with a higher incidence of early surgical complications, potentially causing graft loss. Arterial reconstruction allows patients to overcome these surgical challenges, thus minimizing the risk of poor outcomes. The aim of the present study is to retrospectively investigate the safety and effectiveness of the multiple arterial reconstruction technique with a Teflon patch in case of an unavailable aortic patch: to do so, surgical complications, graft function, and patient survival were evaluated.

Methods

During the period January 2009 to August 2016, 202 adult deceased-donor KTs were performed at our center. Group A (n = 27; reconstruction of multiple arteries) and Group B (n = 175; control group) were compared.

Results

No differences were observed between the 2 groups in terms of early postoperative course, with no vascular complication observed in Group A. No vascular patch infections were reported, nor longer cold ischemia time rates. Similarly, long-term survival rates were similar between the 2 groups.

Conclusions

The Teflon-patch arterial reconstruction technique appears to be safe and effective, with an acceptable balance of benefits and potential risks of using a prosthetic material. Studies based on larger series are needed to further validate this approach.  相似文献   
4.
In HIV/AIDS research, few studies to date have evaluated ways to improve parental HIV disclosure practices using feedback from HIV-negative children who have recently experienced this event. We conducted semi-structured in-depth interviews with 20 children (aged 6–15) who were partially to fully aware of their parents’ HIV status in rural Guangxi, China. Of the 20 children, eight children who were of older age (11.38 years in average) endorsed parental HIV disclosure, five discouraged it and seven expressed uncertainty. Children’s different experiences and attitudes towards disclosure were seen to be associated with their family dynamics (especially the parent–child relationship), social support and care, experiences of stigma and discrimination, psychosocial suffering, comprehension of the disease and the children’s age. Our study contributes to building a child-centered comprehensive understanding for Chinese parental HIV disclosure. It is imperative that counselors and community advocates assess and help parents achieve optimal readiness preceding disclosure of their illness to their HIV-negative children.  相似文献   
5.
6.
7.
8.
9.
10.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号